Abstract: A pipe sleeve adapter that is a universal replacement part that enables a thin-walled pipe to be connected to a pipe sleeve that was designed to receive thick-walled pipe. Pipe sleeve adapter and pipe sleeve have the same nominal dimension, but the outer diameter of the sleeve adapter is smaller than the inner diameter of the pipe sleeve. The sleeve adapter includes a pipe section and an elastically deformable seal that fits around the outer diameter of the pipe section. A stretch device is arranged beneath the seal and has an adjustable height dimension. Increasing the height of the stretch device exerts tension on the seal, which deforms elastically radially outward to an extent defined by the degree of change in height of the stretch device, thereby increasing the outer diameter of the seal to a dimension that corresponds to the inner diameter of the specific pipe sleeve.

Abstract: The invention relates to a method for the manufacture of a section for windows or doors having an external surface and an internal surface and having at least one web which separates a chamber between the external surface and the internal surface. In accordance with the invention, in this method the at least one web is extruded in a first extruder line and led after at least partial cooling into a tool forming the section in which tool then the at least one web is welded to the section.

Abstract: This invention relates to a connecting pipe for a liquid-tight connection to a sewer pipe. The connecting pipe comprises a connecting-pipe body having at least two spaced apart circumferential sealing chambers, where one of the sealing chambers contains a first sealing element comprising a ring seal proximate an inside surface of the sewer pipe and facing an opening-wall surface of the branch opening. The ring seal comprises at least one sealing-lip ring extending over an outer contour of this sealing chamber to contact the opening-wall surface of the branch opening. Another sealing chamber contains a second sealing element comprising a flexible filler proximate an outer surface of the sewer pipe and facing the opening-wall surface of the branch opening, such that a slot chamber extending from this sealing chamber to the opening-wall surface of the branch opening is sealingly bridged.